ASTROSAT CZTI

Data Quality Report

Orbit 19256

Creation date: 2024-06-27T18:00:43.839441
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_115T01_9000002848_19256cztM0_level2.evt modeM0/AS1A05_115T01_9000002848_19256cztM0_level2_quad_clean.evt
Size (bytes)527,688,000102,775,680
Size503.2 MB 98.0 MB
Events in quadrant A3,620,404649,283
Events in quadrant B3,679,836659,616
Events in quadrant C3,771,195640,124
Events in quadrant D4,384,859625,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159173
B0160654
C0161383
D0182593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77231081.398420%
B77221602.072002%
C77221391.800052%
D77221171.515152%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7883 7726 1 1 0.01% 0.01%
B 7882 7725 16 16 0.20% 0.21%
C 7882 7724 0 0 0.00% 0.00%
D 7882 7725 30 30 0.38% 0.39%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 205 21785 110.18 929 907 189.5
A 9 143 10586 51.08 929 907 189.5
A 13 254 9509 45.4 929 907 189.5
B 3 64 63933 352.43 921 896 178.9
B 12 111 22191 119.06 921 896 178.9
B 11 111 19997 106.79 921 896 178.9
C 14 238 138416 653.25 896 903 210.5
C 3 233 131533 620.56 896 903 210.5
C 13 61 6093 24.66 896 903 210.5
D 1 52 936122 4260.88 901 874 219.5
D 13 104 36095 160.46 901 874 219.5
D 2 234 29600 130.87 901 874 219.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter